Ladder shelf



FIG. 1 is a perspective view illustrating my new and ornamental design for a ladder shelf;

FIG. 2 is a front view illustrating the new and ornamental design for the ladder shelf of FIG. 1;

FIG. 3 is a back view illustrating the new and ornamental design for the ladder shelf of FIG. 1;

FIG. 4 is a top view illustrating the new and ornamental design for the ladder shelf of FIG. 1;

FIG. 5 is a bottom view illustrating the new and ornamental design for the ladder shelf of FIG. 1;

FIG. 6 is a left-side view illustrating the new and ornamental design for the ladder shelf of FIG. 1;

FIG. 7 is a right-side view illustrating the new and ornamental design for the ladder shelf of FIG. 1;

FIG. 8 is a perspective view illustrating the new and ornamental design for the ladder shelf of FIGS. 1-7, wherein the ladder shelf is disposed in a deployed position;

FIG. 9 is a top view illustrating the new and ornamental design for the ladder shelf of FIG. 8;

FIG. 10 is a bottom view illustrating the new and ornamental design for the ladder shelf of FIG. 8;

FIG. 11 is a front view illustrating the new and ornamental design for the ladder shelf of FIG. 8;

FIG. 12 is a back view illustrating the new and ornamental design for the ladder shelf of FIG. 8;

FIG. 13 is a right-side view illustrating the new and ornamental design for the ladder shelf of FIG. 8; and,

FIG. 14 is a left-side view illustrating the new and ornamental design for the ladder shelf of FIG. 8.

The broken lines shown in the figures are for the purpose of illustrating environment and form no part of the claimed design. 

CLAIM The ornamental design for a ladder shelf, as shown and described. 